ANATOMY

Detailed explanation-1: -The kidneys maintain homeostasis by filtering wastes from the blood and excreting them from the body through urine. Excretion is important because certain waste products, such as urea, can be harmful in excess amounts. The kidneys also maintain pH level in the body by removing hydrogen ions from the blood.

Detailed explanation-2: -The bean-shaped kidneys filter waste products out of the bloodstream and dispose of them by creating urine. Urine is made of these waste products dissolved in water.

Detailed explanation-3: -The kidneys regulate circulatory volume by controlling sodium and water balance, thus maintaining extracellular fluid volume (ECFV) homeostasis. Simply put, an increase in sodium and water consumption leads to an increase in ECFV, which in turn increases blood volume.

Detailed explanation-4: -Kidneys and Homeostasis For example, they work with the circulatory system to filter blood, and with the urinary system to remove wastes. The kidneys filter all the blood in the body many times each day and produce a total of about 1.5 liters of urine.

Detailed explanation-5: -Each kidney contains about one million tiny units called nephrons. Each nephron is made up of a very small filter, called a glomerulus, which is attached to a tubule. As blood passes through the nephron, fluid and waste products are filtered out.